Liebeschuetz, J. Antioch: City and Imperial Administration in the Later Roman Empire. Oxford: Clarendon Press, 1972.

Manacorda, D. and C. Panella. “Anfore.” In The Inscribed Economy: Production and Distribution in the Roman Empire in Light of “instrumentum domesticum, ed. W. Harris. Ann Arbor,: University of Michigan, 1993: 55-64.

Crusades

The Crusading Era (1095-1291)

Billings, M., The Cross and Crescent: A History of the Crusades. New York: Sterling Pub. Co., 1987 (accompanies a radio series of the same name - a nice, quick intro to the main events)
Joinville and Villehardouin., Chronicles of the Crusades. (M.R.B. Shaw, trans. and intro.) Baltimore, MD, Penguin Books, 1963